New Zealand fur seal demographics

Wekakura Point, 2005

Mark-recapture estimate, 26–27 Jan 2005

Total marked
429
Mean estimate
520.7
Range
510.1 – 533.2

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 26 Jan 2005 08:00 – 08:15 Headland 1 18 43
26 Jan 2005 16:00 – 16:17 Headland 2 11 83
26 Jan 2005 16:25 – 16:42 Headland 3 9 57
All sectors 38 183 - - 429 - 517.8
2 26 Jan 2005 08:35 – 08:42 Headland 1 19 46
26 Jan 2005 19:17 – 19:38 Headland 2 22 104
26 Jan 2005 17:02 – 17:18 Headland 3 6 43
All sectors 47 193 - - 429 - 533.2
3 26 Jan 2005 09:05 – 09:17 Headland 1 19 44
27 Jan 2005 08:04 – 08:22 Headland 2 16 98
26 Jan 2005 17:38 – 17:55 Headland 3 9 47
All sectors 44 189 - - 429 - 528.6
4 26 Jan 2005 09:37 – 09:46 Headland 1 10 42
27 Jan 2005 08:42 – 09:57 Headland 2 11 70
26 Jan 2005 18:15 – 18:30 Headland 3 8 34
All sectors 29 146 - - 429 - 513.8
5 26 Jan 2005 14:48 – 14:58 Headland 1 14 56
27 Jan 2005 17:17 – 17:38 Headland 2 14 108
26 Jan 2005 18:50 – 19:05 Headland 3 12 47
All sectors 40 211 - - 429 - 510.1

Dead count, 24–26 Jan 2005

Count
28

Dead counts

Date Sector Fresh Decomposing Dry Count
24–26 Jan 2005 Headland 1 1 13 8 22
24–26 Jan 2005 Headland 2 1 - 4 5
24–26 Jan 2005 Headland 3 - - 1 1
All sectors 2 13 13 28